Direct synthesis of hydrogen peroxide over supported Pd catalysts: Turning to dense CO2 as an alternative solvent

Authors:   A. Pashkova, L. Greiner, U. Krtschil, C. Hofmann, R. Zapf

Abstract:
An approach for the direct synthesis of hydrogen peroxide with CO₂ as solvent has been explored. Both batch and continuous experiments have been performed. The activity of self-prepared Pd-supported catalysts has been verified leading to high productivity of up to 132 gH₂O₂ gPd−1 h−1 in batch with selectivities of up to 70%. However, the use of dense CO₂ in batch set back catalyst activity leading to the formation of H₂O as the only product. For the continuous process in dense CO₂ increased performance in terms of productivity with up to 26 gH₂O₂ gPd−1 h−1 with low selectivity were achieved.

Keywords:
Hydrogen peroxide direct synthesis
Micro reactors
Dense CO₂

Published in: Applied catalysis A: General  (Volumes 464–465, Pages 1-384, 15 August 2013)

Publisher: Elsevier  

ISSN Information: 0926-860X

Direct synthesis of hydrogen peroxide over supported Pd catalysts: Turning to dense CO2 as an alternative solvent

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